Aids is growing fastest in the poorest countries of africa. these nations don’t have enough doctors, medical labs, or money for medicine. a recent study showed that only a small percentage of hiv-infected children in africa are getting any medical treatment at all. what central idea is emphasized in both sources? the hiv/aids epidemic in africa is serious. the hiv/aids epidemic in south africa is serious. the hiv/aids epidemic among african children is serious. the hiv/aids epidemic among south african children is serious

The HIV/AIDS epidemic in Africa is serious.

Explanation:

This is the idea that is emphasized in this excerpt. The text tells us that the HIV/AIDS epidemic in Africa is very serious. We learn that the epidemic is growing fastest in poor places. We also learn that several conditions make the situation worse, such as not having enough doctors, labs or money. Children are suffering the effects as well. All of these details contribute to the idea that the HIV/AIDS epidemic in Africa is very serious.

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.  

i believe the answer is d